chore: fix installing `cargo-make` on CI

.github/workflows/ci.yml

@@ -19,14 +19,11 @@ jobs:
       matrix:
         rust: ["1.58.1", "stable"]
     steps:
+      # Always install stable for installing cargo-make
       - uses: hecrj/setup-rust-action@967aec96c6a27a0ce15c1dac3aaba332d60565e2
         with:
-          rust-version: ${{ matrix.rust }}
-          components: rustfmt,clippy
-      - uses: actions/checkout@v1
-      - name: "Get cargo bin directory"
-        id: cargo-bin-dir
-        run: echo "::set-output name=dir::$HOME/.cargo/bin"
+          rust-version: stable
+        if: ${{ matrix.rust != 'stable' }}
       - name: "Cache cargo make"
         id: cache-cargo-make
         uses: actions/cache@v2
@@ -35,7 +32,15 @@ jobs:
           key: ${{ runner.os }}-${{ matrix.rust }}-cargo-make-${{ env.CI_CARGO_MAKE_VERSION }}
       - name: "Install cargo-make"
         if: steps.cache-cargo-make.outputs.cache-hit != 'true'
-        run: cargo install cargo-make --version ${{ env.CI_CARGO_MAKE_VERSION }}
+        run: cargo +stable install cargo-make --version ${{ env.CI_CARGO_MAKE_VERSION }}
+      - uses: hecrj/setup-rust-action@967aec96c6a27a0ce15c1dac3aaba332d60565e2
+        with:
+          rust-version: ${{ matrix.rust }}
+          components: rustfmt,clippy
+      - uses: actions/checkout@v1
+      - name: "Get cargo bin directory"
+        id: cargo-bin-dir
+        run: echo "::set-output name=dir::$HOME/.cargo/bin"
       - name: "Format / Build / Test"
         run: cargo make ci
         env:
@@ -48,14 +53,11 @@ jobs:
         rust: ["1.58.1", "stable"]
     steps:
       - uses: actions/checkout@v1
+      # Always install stable for installing cargo-make
       - uses: hecrj/setup-rust-action@967aec96c6a27a0ce15c1dac3aaba332d60565e2
         with:
-          rust-version: ${{ matrix.rust }}
-          components: rustfmt,clippy
-      - uses: actions/checkout@v1
-      - name: "Get cargo bin directory"
-        id: cargo-bin-dir
-        run: echo "::set-output name=dir::$HOME\.cargo\bin"
+          rust-version: stable
+        if: ${{ matrix.rust != 'stable' }}
       - name: "Cache cargo make"
         id: cache-cargo-make
         uses: actions/cache@v2
@@ -64,7 +66,15 @@ jobs:
           key: ${{ runner.os }}-${{ matrix.rust }}-cargo-make-${{ env.CI_CARGO_MAKE_VERSION }}
       - name: "Install cargo-make"
         if: steps.cache-cargo-make.outputs.cache-hit != 'true'
-        run: cargo install cargo-make --version ${{ env.CI_CARGO_MAKE_VERSION }}
+        run: cargo +stable install cargo-make --version ${{ env.CI_CARGO_MAKE_VERSION }}
+      - uses: hecrj/setup-rust-action@967aec96c6a27a0ce15c1dac3aaba332d60565e2
+        with:
+          rust-version: ${{ matrix.rust }}
+          components: rustfmt,clippy
+      - uses: actions/checkout@v1
+      - name: "Get cargo bin directory"
+        id: cargo-bin-dir
+        run: echo "::set-output name=dir::$HOME\.cargo\bin"
       - name: "Format / Build / Test"
         run: cargo make ci
         env: